热轧薄规格带钢板凸度纵向分布特征的研究  

Study on Longitudinal Distribution Characteristics of Crown of Hot Rolled Thin Gauge Strip

作　　者：蒲实 孔超 王小巩 鲁剑龙 李红斌 周景鑫 田亚强 陈连生 PU Shi;KONG Chao;WANG Xiaogong;LU Jianlong;LI Hongbin;ZHOU Jingxin;TIAN Yaqing;CHEN Liansheng(Key Laboratory of the Ministry of Education for Modern Metallurgy Technology,North China University of Science and Technology,Tangshan 063210,China;Plate and Strip Business Department,Chengde Branch of HBIS Company Limited,Chengde 067102,China)

机构地区：[1]华北理工大学教育部现代冶金技术重点实验室,河北唐山063210 [2]河钢股份有限公司承德分公司板带事业部,河北承德067102

出　　处：《热加工工艺》2024年第7期103-108,112,共7页Hot Working Technology

基　　金：河北省自然科学基金项目(E2020209127,E2021209041);高等学校基本科研业务项目(JQN2020024)。

摘　　要：为了控制某1780 mm热轧生产线薄带钢板凸度的纵向分布,通过分析现场轧制过程工艺及板凸度数据,对影响因素进行了定量分析。结果表明:随着带钢厚度的减小,带钢板凸度纵向差值越大,其带钢长度方向上F7机架出口温度、速度和F1机架轧制压力和弯辊力差值越大。随着带钢宽度的减小,板凸度纵向衰减量逐渐增大,带钢中后部的板凸度逐渐低于目标值的下限。随精轧F7机架出口速度、温度的升高以及F1机架轧制压力和弯辊力的降低,板凸度发生衰减,且上述轧制参数波动值越大衰减特征越明显、衰减量越大。In order to control the longitudinal distribution of the crown of the thin strip steel plate in a 1780 mm hot rolling production line,the influencing factors were quantitatively analyzed by analyzing the field rolling process technology and plate crown data.The results show that as the thickness of the strip decreases,the greater the longitudinal difference of the strip crown,the greater the difference of the outlet temperature and speed of the F7 stand,the rolling pressure and bending force of the F1 stand in the length direction of the strip.With the reduction of the strip width,the longitudinal attenuation of the plate crown gradually increases,and the plate crown at the middle and rear of the strip is gradually lower than the lower limit of the target value.With the increase of the exit speed and temperature of the finishing F7 stand and the reduction of the rolling pressure and bending force of the F1 stand,the plate crown attenuates,and the larger the fluctuation value of the above rolling parameters,the more obvious the attenuation characteristic and the greater the attenuation.

关 键 词：薄规格热轧带钢 板凸度纵向分布 轧制温度 轧制速度 轧制压力 

分 类 号：TG335.55[金属学及工艺—金属压力加工]